1. Adjustable Flame for Precise Control：Features a built-in air intake adjustment damping ring that allows you to fine-tune flame hardness and temperature. Easily meet different experimental or heating needs with a simple turn. 2. Dual Gas Tank Compatibility：Constructed from durable brass and metal, this burner supports two common gas tank types: standard flat gas tanks and card-type long gas tanks—giving you flexible fuel options. 3. Efficient & Long-Lasting Operation：Designed for extended use, this Bunsen burner can run continuously for 4–5 hours. It offers high combustion efficiency with low pollution, making it ideal for prolonged laboratory sessions. 4. Reliable Lab Heating Tool：A staple high-temperature heating device in scientific labs, this burner is compatible with card-type long tanks and spiral flat tanks (sold separately). Perfect for precise and consistent heating applications. 5. Versatile Multi-Purpose Use：Suitable not only for laboratory heating but also for medical, dental, craft, and hardware work. A dependable tool wherever controlled, high-temperature flame is required.